Poly(ε-caprolactone) films with favourable properties for neural cell growth

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Neuroscience

Background:

• Brain tissue regeneration faces challenges due to the lack of suitable grafts for functional tissue regrowth after injury.
• Biocompatible and biodegradable scaffolds with appropriate morphology are crucial for neural tissue engineering.

Purpose of the Study:

• To develop a biodegradable 2D scaffold structure using poly(ε-caprolactone) (PCL) for neural tissue engineering applications.
• To characterize the physical structure, morphology, and topography of the fabricated PCL scaffolds.
• To evaluate the in vitro performance of the scaffolds in supporting neural cell growth.

Main Methods:

• Poly(ε-caprolactone) (15%w/w) was dissolved in N-methylpyrrolidone.
• Scaffolds were fabricated using a phase inversion casting technique with ethanol and isopropanol as coagulation baths.
• Scaffold properties including porosity, contact angle, roughness, pore size, and water permeability were characterized. In vitro cell culture studies were performed using human glioblastoma cells.

Main Results:

• The fabricated PCL scaffolds exhibited homogeneous structures with high porosity (>85%).
• Scaffolds displayed contact angles >90°, high roughness (Ra>0.6 μm), and superficial pore sizes of 0.7 and 1.7 μm.
• High water permeability (~350-590 mL m(-1) bar(-1) h(-1)) was observed, indicating efficient nutrient supply. In vitro studies showed good cell attachment, proliferation, and penetration within 48 hours.

Conclusions:

• The developed PCL scaffolds demonstrate promising characteristics for neural tissue regeneration.
• The scaffold's surface morphology and properties positively influence neural cell response.
• These findings highlight the potential of PCL scaffolds in advancing regenerative medicine for brain tissue repair.